EDDY-CURRENT TESTING METHOD AND EDDY-CURRENT TESTING DEVICE

An eddy-current testing method comprises liftoff signal measuring step S1 of giving liftoff to an eddy-current testing probe 10 including one or more coils and measuring a liftoff signal of a reference specimen, phase recording step S2 of recording a phase of a Lissajous figure obtained from the lif...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NISHIMIZU, Akira, SUZUKI, Yutaka, KAKUGAWA, Shigeru
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An eddy-current testing method comprises liftoff signal measuring step S1 of giving liftoff to an eddy-current testing probe 10 including one or more coils and measuring a liftoff signal of a reference specimen, phase recording step S2 of recording a phase of a Lissajous figure obtained from the liftoff signal of the reference specimen, eddy-current testing signal measuring step S3 of measuring an eddy-current testing signal of an object 8 using the eddy-current testing probe 10, and decision step S5, S7 of deciding that the eddy-current testing signal detected in the eddy-current testing signal measuring step S3 is a liftoff signal if the eddy-current testing probe 10 detects the eddy-current testing signal in all the coils in the eddy-current testing signal measuring step S3 and a phase of a Lissajous figure obtained from the eddy-current testing signal detected in the eddy-current testing signal measuring step S3 coincides with the phase recorded in the phase recording step S2 for all the coils.